To assess the regional adaptation of wine grape cultivars to Iowa, a trial was established in 2003 through an Iowa Department of Agriculture and Land Stewardship (IDALS) specialty crops grant awarded to the Iowa Wine Growers Association and contracted to the ISU Department of Horticulture. The trial was designed to evaluate up to 20 cultivars or advanced selections and was established on four ISU farms representing different geographic, climatic, and soil conditions: Horticulture (Hort) Station, Ames; the Armstrong Research Farm, Lewis; the Southeast Research Farm, Crawfordsville; and the Northeast Research Farm, Nashua. Cultivars and selections planted in 2003 included Rubiana (GR-7), NY73.136.17, NY84.0101.04, NY70.0809.10, La Crescent, Prairie Star, Cayuga White, Chancellor, De Chaunac, Esprit, Landot 4511, Leon Millot, St. Vincent, and Vidal Blanc. An additional five cultivars (NY76.0844.24, Frontenac Gris, Briana, MN-1211, and MN- 1198) were added to the trial in 2004, and Swenson White was added in 2005.
Iowa State University
Domoto, Paul A.; Nonnecke, Gail R.; Havlovic, Bernard J.; Pecinovsky, Kenneth T.; and Van Dee, Kevin, "2003 Wine Grape Cultivar Trial" (2006). Iowa State Research Farm Progress Reports. 1049.